Thanks for all the suggestions. My neighbour offererd to come spray verderame on my trees. Had no idea what it was and have since found out and declined the offer for the time being. I've decided to this year to be very relaxed and see what happens. I've been reading and I need to read a bit more to really understand what's going on. I will get a professional to come and assess the trees too, that way I don't waste time trying to resurrect a tree when there is little hope. The West Virginia uni site is excellent reading I have actually found one of the problems in my garden listed on there.
